Stove.



S. BOAL.

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v APPLIOATION FILED AUG. 31, 1907. 91 6,660. Patented Mar. 30, 1909.

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APPLIOATION FILED AUG. a1, 190.7,

91 6,666. Patented Mar. 3o, 1909.

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STANHOPE BOAL, OF PIQUA, OHIO.

STOVE.

Specification of Letters Patent.

Patented March 30, 1909.

Application led August 31, 1907. Serial No. 390,956.

To all whom tt may concern:

Be 1t known that I, STAM-lern Berni, a

citizen of the United States, residing ati Piqua, in the county of Miami and State of Ohio, have invented certain new and useful Improvements in Stoves, of which the following is a specification.

My invention relates to an improvement in base burner stoves.

One of the objects of my invention is to provide a series of flues in the back and base of the stove in which preferably two outer flues are employed for downward circulation and an intermediate flue for an upward circulation of the products of combustion. These iiues are separated from each other and from the rear portion of the stove, thereby providing an improved heating efliciency for the stove by increasing the area of the radiating surfaces.

Another Vobject of my invention is to pro vide air passages having inlets above the base ofthe stove and leading to the air dome at the top portion of the stove.

Other features relate to structural improvements designed to strengthen the stove, and to provide a convenient and efficient distribution of the various parts, and particularly in placing the air circulating tubes at the rear of the stove supplying hot air to the hot air dome above the combustion chamber. The parts are also so arranged as to improve the general design of the stove with an increased eiciency.

The features of my invention will be more fully set forth in the description of the accompanying drawings forming a part of this specification in which:-

Figure 1 is a pers ective view of my improved stove with t e flues for controlling the products of combustion broken for a clear illustration. Fig. 2 is a view of the base portion of the stove and a cross section takenthrough the ihres. vertical section through the base of the stove. Fig. 4 is a section taken on line x, a, Fig. 5. Fig. 5 is a central vertical section of the rear portion of the stove. Fig. 6 is a section taken on line w, w, Fig. 2, through the rear portion of the stove. Fig. 7 is a sectlona erspective view of one corner of the stove ustrating the upper portion ofthe air passagek leading into the air dome.

1, 2 and 3 represent the rear flues which form a continuation of the bottom flues 4, 5 and 6. The two outer fines being down ihres Fig. 3 is a central p y and the intermediate lue an up flue hauling to the escape pipe.

i 7 represents the back of the stove, and the lines 1, 2 and are individual isolated 'lines placed in rear of the back 7 and separated from one another and from the back, providi ing a heat radiating jacket space between the flues and back. By this arrangement the entire area of each 'flue constitutes a heat radiating surface for radiating the heat from the rear of the stove, and also into the jacket space 8 which freely communicates with the atmosphere.

'lhe course of the products of combustion when the stove is used a base burner is as follower-9 represents the lire box and 10 the combustion chamber. The tlucs at l their upper portion terminate or lead into the combustion chamber 1() as is clearly illustrated in Figs. l, 5 and 11 represents a damper for closing the passage way between the combustion chamber 10 and flue 2, and which when the stove is used as a base burner is in its closed position as shown in Figs. 4 and 5. The products of combustion :pass through and in a downward course through the rear lues .1 and ll, as shown by arrows Fig. 6, thence through the base lines l and 6 shown in Fig, 2 leading into the base flue 5 thence upward through the central flue 2 to the oil' take flue 12.

'I`o use the stove as a direct burner the damper is moved or thrown downward to open the passage from the combustion chamber 10 direct into the -flue 2, and to the o'l'll take 1.2.

13 represents a regulator for regulating the draft, opening a passage way between the ash chamber 14 and flue 2.

ln this classl of stoves a het air dome is provided at the top thereof with air pas sages leading from the lower portion of the stove into said hot air dome. rl`hese Vair passages are preferably constructed as foll lows 15 represents tribes providing air passages formed at the rear corners of the stove projecting outwardly and adjacent to the down dues forming a continuation of the jacket space between the back and sides of the stove and the walls of the flues 1 and 3. These air passages terminate above the le(v base and lead into the hot air 'dome 20 and do not take the heated air from the lloor under the stove but receive their sup )ly of air through openings 16 along the si es of the stove. Heretofore these air passages received their air through openings at the bottoni` of the stove above the floor, thus taking` away the heat from the lioor which is deemed objectionable. Air passages as heretofore provided have been exposed at the back of the stove taking away a considerable portion ol' the heat radiating surface, and delivering more or less cold air to the air dome. By my construction these air circulating; lines 'do not interfere with the size of the other flues, the entire Width of the back being taken up by the het air lues l, 2 and 3 and these air circulating flues pass up at the sides where the products of comhus'tion enter the two descending het air llues, thereby heating' the air passing through these to a high degree.

The organization of this stove further adds to the ornamental design. and utilizes to the greatest advantage every inch of available space lor increasing the radiating surface.

Another feature of improvement is the i construction of the. ottom of the het air lines at the base oilf the stove. Great difliculty has been experienced with the warping and buckling of this base plate in the ordinary stove. To avoid this and likewise increase the heat radiating` surfaces at the base of the stove l torni the bottoni plate i7, see 'lf 3, with transverse inverted conical ribs 18 forming a portion oi the partition Walls between the lues 5 and 6. Liliewise the same trouble has been experienced with the upper plate 21 forming the top or the Yllues and the base ol' the ash chamber, and to overcome the warping and buckling, l have provided the ribs 19 forming a support for the ash pan 22. By this construction of base i'lues the lower part oi the ash 'chamber and open to each other at their o sides and front are exposed to the intense vheat that passes through the bottom lues making the entire sides and front from the leg to the top of the ash chamber radiating surfaces.

Having described my invention7 l elaim:-

l. ln a stove of the class described, three independent vertical llues communicating With the combustion chamber, separated from each other and the rear Wall vof the stove, three horizontal iiues in the base of the 'stove :communicating respectively with said vertical fines at one end and opento each other their opposite ends, means for 'closino' the passage of the intermediate ver- Vtorn plate provided Vwith .'-shaped ribs, division plates seated upon sairl ribs forming three base lues between the bottom plate and the ash chamber communicating respectively with said vertical lues at one end pposite ends, substantially as described.

ln testimony whereof, l have hereunto set my hand. l

S'lr-XNH'OPE BOAL. .f'fitnesses z l). filmini-MANN, L. W. GnNsLiNGER. 

